STIGQter STIGQter: STIG Summary: Cisco ACI Layer 2 Switch Security Technical Implementation Guide Version: 1 Release: 2 Benchmark Date: 05 Jan 2026:

The Cisco ACI layer 2 switch must have Internet Group Management Protocol (IGMP) or Multicast Listener Discovery (MLD) snooping configured on all VLANs.

DISA Rule

SV-272039r1168265_rule

Vulnerability Number

V-272039

Group Title

SRG-NET-000512-L2S-000002

Rule Version

CACI-L2-000011

Severity

CAT III

CCI(s)

Weight

10

Fix Recommendation

Configure IGMP and MLD snooping for IPv4 and IPv6 multicast traffic respectively globally.

To show that the IGMP and/or MLD policy is assigned to the correct Bridge domain, navigate to Tenants >> {{Your_Tenant}} >> Networking >> Bridge Domains >> {{your_BridgeDomain}} >> Policy >> General. Select the IGMP snoop Policy and MLD Snoop Policy.

Check Contents

Verify the switch configuration enables IGMP and MLD snooping for IPv4 and IPv6 multicast traffic.

To show that the IGMP or MLD policy is assigned to the correct Bridge domain, navigate to Tenants >> {{Your_Tenant}} >> Networking >> Bridge Domains >> {{your_BridgeDomain}} >> Policy >> General. Select the IGMP snoop Policy and MLD Snoop Policy.

If the switch is not configured to implement IGMP or MLD snooping for each bridge domain, this is a finding.

Vulnerability Number

V-272039

Documentable

False

Rule Version

CACI-L2-000011

Severity Override Guidance

Verify the switch configuration enables IGMP and MLD snooping for IPv4 and IPv6 multicast traffic.

To show that the IGMP or MLD policy is assigned to the correct Bridge domain, navigate to Tenants >> {{Your_Tenant}} >> Networking >> Bridge Domains >> {{your_BridgeDomain}} >> Policy >> General. Select the IGMP snoop Policy and MLD Snoop Policy.

If the switch is not configured to implement IGMP or MLD snooping for each bridge domain, this is a finding.

Check Content Reference

M

Target Key

5683